Evidence map›Paper›PMID 19277245›Full record

Trial reportTransactions of the American Ophthalmological Society2008

The role of omega-3 dietary supplementation in blepharitis and meibomian gland dysfunction (an AOS thesis).

Marian S Macsai

2 registry-linked trialsOpen access · greenAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Transactions of the American Ophthalmological Society, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 59 papers, 7 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed, 7 pooled it
7.0field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT01059019 nacompletednot on this mapstarted 2010, after this paper: background citation

Epithelial Healing and Visual Outcomes of Patients Using Omega-3 Supplements as an Adjunct Therapy Before and After Photorefractive Keratectomy (PRK) Surgery

TypeinterventionalSponsorUniversity of California, San DiegoRan2010 to 2011Enrolled17ConditionsRefractive ErrorArmsOmega-3 Fatty Acid Supplements
NCT03953118 phase4terminatednot on this mapstarted 2019, after this paper: background citation

A Randomized, Controlled Trial to Evaluate the Role of Oral Azithromycin in the Treatment of Symptomatic Meibomian Gland Disease and Its Effect on the Ocular Surface Microbiome

TypeinterventionalSponsorUniversity of California, San FranciscoRan2019 to 2021Enrolled2ConditionsDry Eye, Neuropathic Eye Pain, Ocular Microbiome, Depression, AnxietyArmsAzithromycin Oral Product, Placebo Oral
3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 7 syntheses or guidelines pooled it, 161 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Omega-3 and omega-6 polyunsaturated fatty acids for dry eye disease.The Cochrane database of systematic reviews · 2019
    Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Interventions for chronic blepharitis.The Cochrane database of systematic reviews · 2012
    Pooled it
  8. Trial
  9. Trial
  10. Trial
  11. Trial
  12. Red blood cell fatty acid analysis for determining compliance with omega3 supplements in dry eye disease trials.Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics · 2013
    Trial
  13. Review
  14. Review
  15. Review
  16. Article
  17. Article
  18. Photothermal-Responsive Soluble Microneedle Patches for Meibomian Gland Dysfunction Therapy.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2025
    Article
  19. How Eyelid Changes May Impact on Tears.Journal of clinical medicine · 2024
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Marian S MacsaiDepartment of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.
Northwestern University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeBlepharitis and meibomian gland dysfunction (MGD) are common sources of complaints from patients. To evaluate the effect on ocular symptoms, ocular findings, and serum and meibomian gland contents, patients with blepharitis and MGD were prospectively evaluated to determine the effects of dietary supplementation with omega-3 fatty acids.

methodsIn a prospective randomized placebo-controlled masked trial, patients with simple obstructive MGD and blepharitis, who had discontinued all topical medications and tetracyclines, received oral omega-3 dietary supplementation consisting of two 1000-mg capsules 3 times a day. Patients were examined every 3 months for 1 year with the Ocular Surface Disease Index (OSDI) objective clinical measures, including tear production and stability, ocular surface and meibomian gland health, and biochemical plasma, red blood cell (RBC), and meibum evaluation. Primary outcome measures were change in tear breakup time (TBUT), meibum score, and overall OSDI score at 1 year.

resultsAt 1 year, the omega-3 group had a 36% and 31% reduction in their omega-6 to omega-3 fatty acid ratios in RBCs and plasma, respectively (P = .3), whereas the placebo group demonstrated no change. At 12 months, the omega-3 group had an improvement in TBUT, OSDI score, and meibum score. Changes in meibum content were observed in the omega-3 group (P = .21); the level of meibum saturated fatty acids decreased.

conclusionsThis trial demonstrated a decrease in the RBC and plasma ratios of omega-6 to omega-3 in patients taking omega-3 dietary supplementation, as compared to controls, and improvements in their overall OSDI score, TBUT, and meibum score. This is the first demonstration of an induced change in the fatty acid saturation content in meibum as a result of dietary supplementation with omega-3 fatty acids.

Indexed as

Dietary SupplementsAdministration, OralBlepharitisCapsulesDietDiet RecordsDouble-Blind MethodErythrocyte MembraneEyelid DiseasesFatty Acids, Omega-3Fatty Acids, Omega-6FemaleHumansLinseed OilMaleMeibomian GlandsCapsulesFatty Acids, Omega-3Fatty Acids, Omega-6Linseed OilOlive OilPlant Oils

Identifiers

PMID19277245
PMCPMC2646454
OpenAlexW201137484

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.